package com.comprental.config;

import com.comprental.entity.SysLog;
import com.comprental.service.SyslogService;
import com.comprental.utils.HttpContextUtils;
import com.comprental.utils.IPUtils;
import com.google.gson.Gson;
import lombok.AllArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletRequest;
import java.lang.reflect.Method;
import java.util.Date;


/**
 * 系统日志，切面处理类
 */
@Aspect
@Component
@Slf4j
@AllArgsConstructor
public class SysLogAspect {
    private SyslogService syslogService;

    @Pointcut("@annotation(com.comprental.annotation.SysLog)")
    public void logPointCut() { }

    @Around("logPointCut()")
    public Object around(ProceedingJoinPoint point) throws Throwable {
        long beginTime = System.currentTimeMillis();
        //执行方法
        Object result = point.proceed();
        //执行时长(毫秒)
        long time = System.currentTimeMillis() - beginTime;

        // 2.保存日志
        saveSysLog(point, time);

        return result;
    }

    private void saveSysLog(ProceedingJoinPoint joinPoint, long time) {
        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        Method method = signature.getMethod();

        SysLog sysLog = new SysLog();
        com.comprental.annotation.SysLog syslog = method.getAnnotation(com.comprental.annotation.SysLog.class);
        if (syslog != null) {
            //注解上的描述
            sysLog.setOperation(syslog.value());
        }

        //请求的方法名
        String className = joinPoint.getTarget().getClass().getName();
        String methodName = signature.getName();
        sysLog.setMethod(className + "." + methodName + "()");
        //请求的参数
        Object[] args = joinPoint.getArgs();
        try {
            String params = args.length > 0?new Gson().toJson(args[0]): "";
            sysLog.setParams(params);

            //获取request
            HttpServletRequest request = HttpContextUtils.getHttpServletRequest();
            //设置IP地址
            sysLog.setIp(IPUtils.getIpAddr(request));
            sysLog.setTime(time);
            sysLog.setCreateTime(new Date());
            //保存系统日志
            syslogService.save(sysLog);
        } catch (Exception e) {
            log.error("save user log failed：{}", e.getMessage());
            e.printStackTrace();
        }

    }
}
